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Stack Overflow Before the AI Agents Arrived

I read this one on a Saturday during a lecture break, and it asked the question I had been avoiding: when did I last open Stack Overflow to actually solve something? The honest answer was embarrassing. The tab that lived open for years now gathers dust — and the numbers say I am not special.

The numbers of the fall

The article lays it out plainly. Monthly visits fell from about 110 million in 2022 to 55 million in 2024 — roughly half, gone in two years. Researchers measured a 25% plunge in activity in the six months after ChatGPT’s release alone.

The timeline makes the cause hard to dodge. Copilot landed in editors in mid-2021, ChatGPT arrived in November 2022, and suddenly the forum round-trip — search, skim three answers, check the comments for the “don’t do it this way” warning — got compressed into a prompt answered before you finish typing.

What replaced it

Here is the twist the 2025 Developer Survey caught: developers never actually left. A strong majority still visit at least a few times a month, a quarter of them daily. But about a third of those visits now happen because of AI — debugging, verifying, or untangling something an assistant produced.

Read that again, because it inverts the whole story. We stopped going to Stack Overflow for answers and started going there to fix the answers we got somewhere else. The site went from answer machine to court of appeal: the place you land when the agent is confidently wrong.

The loop that eats itself

The article’s sharpest line is its last one: the more answers live inside closed AI systems, the less fresh human-written material exists to train the next generation of models. Those models learned to code by reading Stack Overflow. If nobody writes there anymore, the well they drink from stops refilling.

That is the real cost, and it is slow enough to ignore. Not a dead site — a starving corpus. Every question answered privately by a chatbot is a page that never gets written for the commons.

So what was it, before?

Stack Overflow before the agents was the default first stop: human-verified, argumentative, full of war stories in the comments. AI tools solved a different problem — not the search problem, but the context problem: an answer shaped to your code, right now. That is genuinely better for speed. It is genuinely worse for the shared record.

My verdict: the site is not dying, its job changed. Keep the agents for velocity, keep Stack Overflow for ground truth — and write the answer down when you find one, because the next model is thirsty.

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